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OpenClaw: 502 Bad Gateway (dns)

Common message

502 Bad Gateway

Symptoms​

  • Site can't be reached (NXDOMAIN) after deploy
  • Old IP still returned by resolver
  • Propagation differs by ISP/region

Root cause​

DNS record missing or stale cache

Fix​

  1. Confirm record exists in the authoritative zone and TTL is reasonable.
  2. Verify delegation for subzone apps.yamify.co if used.
  3. Wait for negative cache expiry if NXDOMAIN was recently cached.